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Radeon R9 280X vs Radeon RX 480

Intro

The Radeon R9 280X comes with a GPU clock speed of 850 MHz, and the 3072 MB of GDDR5 memory is set to run at 1500 MHz through a 384-bit bus. It also is made up of 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

Compare those specifications to the Radeon RX 480, which has a GPU core clock speed of 1120 MHz, and 8192 MB of GDDR5 RAM set to run at 2000 MHz through a 256-bit bus. It also features 2304 Stream Processors, 144 TAUs, and 32 ROPs.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon RX 480 13349 points
Radeon R9 280X 8886 points
Difference: 4463 (50%)

Zcash Mining Hash Rate

Radeon R9 280X 294 Sol/s
Radeon RX 480 280 Sol/s
Difference: 14 (5%)

Ethereum Mining Hash Rate

Radeon RX 480 27 Mh/s
Radeon R9 280X 21 Mh/s
Difference: 6 (29%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 480 150 Watts
Radeon R9 280X 250 Watts
Difference: 100 Watts (67%)

Memory Bandwidth

As far as performance goes, the Radeon R9 280X should in theory be a small bit better than the Radeon RX 480 in general. (explain)

Radeon R9 280X 288000 MB/sec
Radeon RX 480 262144 MB/sec
Difference: 25856 (10%)

Texel Rate

The Radeon RX 480 should be much (approximately 48%) faster with regards to AF than the Radeon R9 280X. (explain)

Radeon RX 480 161280 Mtexels/sec
Radeon R9 280X 108800 Mtexels/sec
Difference: 52480 (48%)

Pixel Rate

If using a high resolution is important to you, then the Radeon RX 480 is superior to the Radeon R9 280X, by a large margin. (explain)

Radeon RX 480 35840 Mpixels/sec
Radeon R9 280X 27200 Mpixels/sec
Difference: 8640 (32%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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Radeon R9 280X

Amazon.com

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Radeon RX 480

Amazon.com

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Radeon R9 280X Radeon RX 480
Manufacturer AMD AMD
Year October 2013 June 2016
Code Name Tahiti XTL Polaris 10
Memory 3072 MB 8192 MB
Core Speed 850 MHz 1120 MHz
Memory Speed 6000 MHz 8000 MHz
Power (Max TDP) 250 watts 150 watts
Bandwidth 288000 MB/sec 262144 MB/sec
Texel Rate 108800 Mtexels/sec 161280 Mtexels/sec
Pixel Rate 27200 Mpixels/sec 35840 Mpixels/sec
Unified Shaders 2048 2304
Texture Mapping Units 128 144
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 256-bit
Fab Process 28 nm 14 nm
Transistors 4313 million 5700 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.2 DirectX 12.0
OpenGL Version OpenGL 4.3 OpenGL 4.5

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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Radeon R9 280X

Amazon.com

Check prices at:

Radeon RX 480

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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